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Closed ecological systems or contained ecological systems (CES) are ecosystems that do not rely on matter exchange with any part outside the system in order to help maintain life.
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closed ecological systems system ecosystems life must human species waste oxygen space habitats carbon organisms rely maintain used products one
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| carbon dioxide | instance of | waste products | 0.80 | text |
| feces | instance of | waste products | 0.80 | text |
| and urine must eventually be converted into oxygen | instance of | waste products | 0.80 | text |
| food | instance of | waste products | 0.80 | text |
| and water.These systems still rely on constant external energy input | instance of | waste products | 0.80 | text |
| such as sunlight.A closed ecological system must contain at least one autotrophic organism | instance of | waste products | 0.80 | text |
| green algae | instance of | almost all closed ecological systems to date are based on an autotroph | 0.80 | text |
| carbon sequestration | instance of | as any decline in the species of the closed system may lead to system collapse as no other organisms are able to compensate.Natural processes | 0.80 | text |
| oxygen production are highly sensitive to changes within a closed system | instance of | as any decline in the species of the closed system may lead to system collapse as no other organisms are able to compensate.Natural processes | 0.80 | text |
| which can lead to dangerous accumulations or depletions in gases | instance of | as any decline in the species of the closed system may lead to system collapse as no other organisms are able to compensate.Natural processes | 0.80 | text |
| toxins | instance of | as any decline in the species of the closed system may lead to system collapse as no other organisms are able to compensate.Natural processes | 0.80 | text |
| Closed ecological system | related to Examples | Man-made | 0.60 | section |
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